Subject: SV: Registration of MIME media type text/t140

From: "Gunnar Hellstrom" <[email-masked]>
Date: Tue, 12 Oct 1999 08:25:16 +0200

Larry Masinter asks if the Text Conversation topic should be handled by the
IMPP group.
Yes, why not.
Now, the transport is handled in the avt group because it makes use of RTP.
Then the t140 medium is to be registered as a MIME text type.

The purpose is real time character by character ( or close ) transmission of
text in a call.
In many cases it is combined with voice or video.

IMPP goals is short messages first entered as a whole and then transmitted.
That is different, but it would of course be of interest to study
interworking.

Regards
Gunnar Hellström

> -----Ursprungligt meddelande-----
> Från: Larry Masinter [mailto:[email-masked]]
> Skickat: den 11 oktober 1999 01:53
> Till: [email-masked]; Harald Tveit Alvestrand;
> [email-masked]
> Ämne: RE: Registration of MIME media type text/t140
>
>
>
> > Response to Harald's questions:
> >
> > The MIME Media type text/t140 is intended for the standards track.
> > It will be used firstly in the megaco/H.248 protocol to indicate use of
> > either RTP/t140 with the RTP payload format specified in the
> internet-draft
> > provided as the transport and medium for text conversation, or
> TCP with the
> > t140 stream without extra framing.
> >
> > For that purpose it also needs IANA registration.
> >
> > T.140 is intended for real time, character by character text
> chatting. Time
> > stamping info is not important. In transmission, it is UTF-8
> coded. The use
> > as a text chat medium restricts use of positioning and
> formatting control
> > characters to a minimal set.
> >
> > To me it seems like it is suitable to register it as text.
> >
> > There is no explicit way to indicate language.
> > It may be hard in an real time text chat to promise to keep to
> one language,
> > but there are many other planned environments where T.140 fits,
> so it might
> > be useful to give a language indication.
> >
> > Can you advice me how that is normally done?
> >
>
> The IMPP working group is developing standards for real-time
> text chatting. If there's going to be an IETF standard for
> it, shouldn't it be considered by the IMPP group?
>
>
----------------------------------------------
Gunnar Hellström
LM Ericsson
Sweden
E-mail [email-masked]

Tel +46 8 556 002 03
Mob. +46 708 204 288
Video and V.18 text tel +46 8 556 002 05
Fax +46 8 556 002 06
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